This is something that has drove me crazy for a long time.
When I have a text layer selected (and then chose the font-size selector), I cannot use the scroll wheel (or the arrow keys for that matter) to change the font-size the way I do for the rest of text properties (let's say the font-family). In this particular case I have to click the font-size box in order to be able to manipulate it, and even so, there is not live-preview when the value changes, I have to press enter for it to take effect.
Hm... It may be a Windows-only thing, assuming Conroy is accurately reproducing the situation.
Changing the font size field in the options area or Character panel does not change the font size in real time on my Photoshop CS6 Windows 7 setup. I don't believe changing the font size has ever worked in real time for me in past versions either.
Some people use the Transform function to size text interactively.
I've just discovered that the size change IS interactive if I select the text first.
It's just not interactive for me if, with a Text layer selected, I click on the T (Horizontal Text Tool) then proceed to change the size field.
It seems logical, yes, but without the text selected it's quite trivial to scroll through the font faces, for example, and see the changes in real time.
It really should work consistently, and without the need for a highlight, which makes it more difficult to see how it's really going to look.
In cs5 windows i have no problems changing the font using arrows or the scroll wheel.
You should be able to just click inside the font box to highlight the text or click on the dropdown for the menu and then the font list will scroll.
Unless i know the particular font i want, i double click on the text layer or highlight the text on the document so you don't waste a bunch of history states making your changes to the text
and also all the other text adjustments work in real time like tracking.
Okay yeah the font size works different on windows. In that case you could use the scrubby slider and when you release the mouse the size should update on the screen.
I guess i'm just use to highlighting the text on the screen or double clicking the text layer to make changes so everything works in real time.
Okay yeah the font size works different on windows.
Apparently not from what the others have said.